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Article Dans Une Revue Journal of Physics B: Atomic, Molecular and Optical Physics Année : 2010

Atomic decay near a quantized medium of absorbing scatterers

Résumé

The decay of an excited atom in the presence of a medium that both scatters and absorbs radiation is studied with the help of a quantumelectrodynamical model. The medium is represented by a half space filled with a randomly distributed set of non-overlapping spheres, which consist of a linear absorptive dielectric material. The absorption effects are described by means of a quantized damped-polariton theory. It is found that the effective susceptibility of the bulk does not fully account for the medium-induced change in the atomic decay rate. In fact, surface effects contribute to the modification of the decay properties as well. The interplay of scattering and absorption in the total decay rate is discussed.

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Dates et versions

hal-00569792 , version 1 (25-02-2011)

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L G Suttorp, a J van Wonderen. Atomic decay near a quantized medium of absorbing scatterers. Journal of Physics B: Atomic, Molecular and Optical Physics, 2010, 43 (10), pp.105501. ⟨10.1088/0953-4075/43/10/105501⟩. ⟨hal-00569792⟩

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